/**
  * {@inheritDoc}
  */
 public function loadMetadata($class)
 {
     if (is_object($class)) {
         $class = get_class($class);
     }
     if (!$this->supportsClass($class)) {
         throw new ClassNotSupportedException(sprintf('The class "%s" not supported for load event metadata.', $class));
     }
     return $this->loader->loadMetadata($class);
 }